| PTC Series A1 | -- | -- | [ICRA]AA+(SO) | -- |
| PTC Series A1 | -- | -- | Provisional [ICRA]AA (SO) | -- |
| PTC Series A1 | -- | -- | Withdrawn | -- |
| PTC Series A1 | -- | -- | Withdrawn | -- |
| PTC Series A2 | -- | -- | Withdrawn | -- |
| PTC Series A1 | -- | -- | [ICRA]AA-(SO) | -- |
| Term Loan | -- | -- | [ICRA]A+(Negative) | -- |
| Non-Convertible Debentures | -- | -- | [ICRA]A+(Negative) | -- |
| PTC Series A1 | -- | -- | Withdrawn | -- |
| PTC Series A1(a) | -- | -- | Withdrawn | -- |